Fix build after r229094: replace llvm/PassManager.h -> llvm/IR/LegacyPassManager.h

llvm-svn: 229100
diff --git a/lldb/source/Expression/IRForTarget.cpp b/lldb/source/Expression/IRForTarget.cpp
index 7951812..e9a769a 100644
--- a/lldb/source/Expression/IRForTarget.cpp
+++ b/lldb/source/Expression/IRForTarget.cpp
@@ -16,7 +16,7 @@
 #include "llvm/IR/Instructions.h"
 #include "llvm/IR/Intrinsics.h"
 #include "llvm/IR/Module.h"
-#include "llvm/PassManager.h"
+#include "llvm/IR/LegacyPassManager.h"
 #include "llvm/Transforms/IPO.h"
 #include "llvm/IR/Metadata.h"
 #include "llvm/IR/ValueSymbolTable.h"